diff --git a/kernel/trunk/gui/window.inc b/kernel/trunk/gui/window.inc
index 32e4474f67..9699aa35b0 100644
--- a/kernel/trunk/gui/window.inc
+++ b/kernel/trunk/gui/window.inc
@@ -552,7 +552,7 @@ repos_windows:
     jle    .lp3
         mov     [edi+WDATA.box.width],ebx
   .lp3: sub     ebx,[edi+WDATA.box.width]
-        mov     [esi+WDATA.box.left],ebx
+        mov     [edi+WDATA.box.left],ebx
   .lp4: mov     eax,[edi+WDATA.box.top]
         add     eax,[edi+WDATA.box.height]
     mov    ebx,[0x0000fe04]
diff --git a/kernel/trunk/kernel.asm b/kernel/trunk/kernel.asm
index 42f745ccee..33991282da 100644
--- a/kernel/trunk/kernel.asm
+++ b/kernel/trunk/kernel.asm
@@ -3468,7 +3468,7 @@ calculatebackground:   ; background
 
         mov   edi,display_data              ; set os to use all pixels
         mov   eax,0x01010101
-        mov   ecx,0x1fff00 / 4
+        mov   ecx,0x15ff00 / 4
         rep   stosd
 
         mov   byte [0xFFF0], 0              ; do not draw background!